Henry WJ Reeve

  1. Shrinking Targets for Countable Markov Maps.

    Authors: Henry WJ Reeve
    Subjects: Dynamical Systems
    Abstract

    Let $T$ be an expanding Markov map with countable number of inverse branches
    and a repeller $\Lambda$ contained within $[0,1]$. Given a well behaved
    non-negative potential $\phi$ we consider the set of points $x$ in $\Lambda$
    for which $T^n(x)$ hits a shrinking ball of radius $e^{-S_n(\phi)(x)}$ around
    $y$, where $S_n(\phi)$ denotes the n-th level Birkhoff sum, for infinitely many
    iterates $n$. Let $s(\phi)$ denote the infimal value of $s$ for which the
    pressure function $P(-s (\psi+\phi))$ is negative.

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